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   <div id="projectname">Automatizacion de medición de susceptibilidad magnética
   &#160;<span id="projectnumber">0.7</span>
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   <div id="projectbrief">El firmware que a continuación se presenta, es para manejar un par de ejes lineales que se encuentran en una posición ortogonal, a fin de imitar el movimiento que realiza un operador cuando toma 100 muestras en un núcleo de mineral obtenido de paleo lagos</div>
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<div class="title">Propbool.c</div>  </div>
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<div class="contents">
<a href="_propbool_8c.html">Ir a la documentación de este archivo.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="preprocessor">#include &lt;stdio.h&gt;</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="preprocessor">#include &lt;stdlib.h&gt;</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="preprocessor">#include &lt;math.h&gt;</span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;</div>
<div class="line"><a name="l00005"></a><span class="lineno"><a class="code" href="_propbool_8c.html#a5b086514f6963b35ee29bc954fc9b0f3">    5</a></span>&#160;<span class="preprocessor">#define LMAX 100</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment">//DECLARACION DE PROTOTIPOS</span></div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;</div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="keywordtype">int</span> <a class="code" href="_propbool_8c.html#a0d267f061bd836f759299d69cd7d4f1a">leer_entrada</a>(<span class="keywordtype">char</span> *prop);</div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="keywordtype">int</span> <a class="code" href="_propbool_8c.html#abea34badcc142c06e8d5b4f8c5ac5862">max_precedencia</a>(<span class="keywordtype">char</span> *prop, <span class="keywordtype">int</span> ini, <span class="keywordtype">int</span> fin);</div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="keywordtype">int</span> <a class="code" href="_propbool_8c.html#ad0acd78bee8a5b768d35240be8cfb722">precedencia</a>(<span class="keywordtype">char</span> c);</div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="keywordtype">bool</span> <a class="code" href="_propbool_8c.html#a4ac22ed0fc9ab98c2770201ac034397c">validar_sintaxis</a>(<span class="keywordtype">char</span> *prop, <span class="keywordtype">int</span> ini, <span class="keywordtype">int</span> fin);</div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="keywordtype">bool</span> <a class="code" href="_propbool_8c.html#a11e5ac67d990d85f2e7c3229badd69a3">evaluar_proposicion</a>(<span class="keywordtype">char</span> *prop, <span class="keywordtype">bool</span> *vals, <span class="keywordtype">char</span> *vars, <span class="keywordtype">char</span> *resp, <span class="keywordtype">int</span> ini, <span class="keywordtype">int</span> fin);</div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="keywordtype">int</span> <a class="code" href="_propbool_8c.html#af52a35e15a3ce80a7521c75d5e78f396">buscar_variables</a>(<span class="keywordtype">char</span> *prop, <span class="keywordtype">char</span> *vars);</div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;</div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;</div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="comment">//PROGRAMA PRINCIPAL</span></div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;</div>
<div class="line"><a name="l00019"></a><span class="lineno"><a class="code" href="_propbool_8c.html#ae66f6b31b5ad750f1fe042a706a4e3d4">   19</a></span>&#160;<span class="keywordtype">int</span> <a class="code" href="lcd_test_8c.html#acdef7a1fd863a6d3770c1268cb06add3">main</a>() {</div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160; <span class="keywordtype">char</span> prop[<a class="code" href="_propbool_8c.html#a5b086514f6963b35ee29bc954fc9b0f3">LMAX</a>];</div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160; <span class="keywordtype">char</span> *vars;</div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160; <span class="keywordtype">char</span> *resp;</div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160; <span class="keywordtype">bool</span> *vals; </div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160; </div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160; </div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160; printf(<span class="stringliteral">&quot;Este programa construye la tabla de verdad de una exprecion logica.\n&quot;</span>);</div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160; printf(<span class="stringliteral">&quot;Los operadores logicos validos son:\n\n&quot;</span>);</div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160; printf(<span class="stringliteral">&quot;\&quot;!\&quot;\tNEGACION\n&quot;</span>);</div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160; printf(<span class="stringliteral">&quot;\&quot;&amp;\&quot;\tCONJUNCION\n&quot;</span>);</div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160; printf(<span class="stringliteral">&quot;\&quot;|\&quot;\tDISYUNCION\n&quot;</span>);</div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160; printf(<span class="stringliteral">&quot;\&quot;:\&quot;\tIMPLICACION\n&quot;</span>);</div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160; printf(<span class="stringliteral">&quot;\&quot;=\&quot;\tBICONDICIONAL\n\n&quot;</span>);</div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160; printf(<span class="stringliteral">&quot;Puede usar expreciones anidadas con parentesis.\n\n&quot;</span>);</div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160; </div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160; printf(<span class="stringliteral">&quot;EXPRECION&gt; &quot;</span>);</div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160; <span class="keywordtype">int</span> n = <a class="code" href="_propbool_8c.html#a0d267f061bd836f759299d69cd7d4f1a">leer_entrada</a>(prop);</div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160; </div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160; resp = <span class="keyword">new</span> <span class="keywordtype">char</span>[n];</div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160; vars = <span class="keyword">new</span> <span class="keywordtype">char</span>[n];</div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160; vals = <span class="keyword">new</span> <span class="keywordtype">bool</span>[n];</div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160; <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i=0; i&lt;n; i++) {</div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;  resp[i] = <span class="charliteral">&#39; &#39;</span>;</div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;  vars[i] = <span class="charliteral">&#39;\0&#39;</span>;</div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;  vals[i] = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160; }</div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160; resp[n-1] = <span class="charliteral">&#39;\0&#39;</span>;</div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160; </div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160; <span class="keywordflow">if</span>(<a class="code" href="_propbool_8c.html#a4ac22ed0fc9ab98c2770201ac034397c">validar_sintaxis</a>(prop, 0, n)) {</div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;  <span class="keywordtype">int</span> nvars = <a class="code" href="_propbool_8c.html#af52a35e15a3ce80a7521c75d5e78f396">buscar_variables</a>(prop, vars);</div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;  <span class="keywordtype">int</span> reps = (int)pow(2, nvars);</div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;</div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;        printf(<span class="stringliteral">&quot;\n&quot;</span>);</div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;  <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i=0; i&lt;nvars; i++)</div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;   printf(<span class="stringliteral">&quot;%c &quot;</span>, vars[i]);</div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;  printf(<span class="stringliteral">&quot;| &quot;</span>);</div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;  <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i=0; i&lt;n; i++)</div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;   printf(<span class="stringliteral">&quot;%c &quot;</span>, prop[i]);</div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;  printf(<span class="stringliteral">&quot;\n\n&quot;</span>);  </div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;  <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i=0; i&lt;reps; i++) {</div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;   <span class="keywordflow">for</span>(<span class="keywordtype">int</span> j=0; j&lt;nvars; j++) {</div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;    <span class="keywordflow">if</span>(i%(<span class="keywordtype">int</span>)pow(2, nvars-j-1) == 0) {</div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;     vals[j] = !vals[j];</div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;    }</div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;    <span class="keywordflow">if</span>(vals[j]) printf(<span class="stringliteral">&quot;V &quot;</span>); <span class="keywordflow">else</span> printf(<span class="stringliteral">&quot;F &quot;</span>);</div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;   }</div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;   printf(<span class="stringliteral">&quot;| &quot;</span>);</div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;   <a class="code" href="_propbool_8c.html#a11e5ac67d990d85f2e7c3229badd69a3">evaluar_proposicion</a>(prop, vals, vars, resp, 0, n);</div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;   <span class="keywordflow">for</span>(<span class="keywordtype">int</span> j=0; j&lt;n; j++)</div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;    printf(<span class="stringliteral">&quot;%c &quot;</span>, resp[j]);</div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;   printf(<span class="stringliteral">&quot;\n&quot;</span>);</div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;  }</div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160; }</div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160; <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;  printf(<span class="stringliteral">&quot;ERROR LA SINTAXIS DE LA EXPRECION ES INCORRECTA.\n&quot;</span>);</div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160; }</div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;    system(<span class="stringliteral">&quot;pause&gt;nul&quot;</span>);</div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160; <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;}</div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;</div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;</div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;<span class="comment">//IMPLEMENTACION DE FUNCIONES</span></div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;</div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;<span class="comment">Lee una exprecion por teclado anulando los espacios en blanco y devuelve el </span></div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;<span class="comment">numero de caracteres que conforman la exprecion.</span></div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00087"></a><span class="lineno"><a class="code" href="_propbool_8c.html#a0d267f061bd836f759299d69cd7d4f1a">   87</a></span>&#160;<span class="keywordtype">int</span> <a class="code" href="_propbool_8c.html#a0d267f061bd836f759299d69cd7d4f1a">leer_entrada</a>(<span class="keywordtype">char</span> *prop) {</div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160; <span class="keywordtype">char</span> c; <span class="keywordtype">int</span> i=0;</div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160; <span class="keywordflow">while</span>((c=getchar()) != <span class="charliteral">&#39;\n&#39;</span> &amp;&amp; i &lt; (<a class="code" href="_propbool_8c.html#a5b086514f6963b35ee29bc954fc9b0f3">LMAX</a>-1))</div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;  <span class="keywordflow">if</span>(c!=<span class="charliteral">&#39; &#39;</span>)</div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;   prop[i++] = c;</div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160; prop[i] = <span class="charliteral">&#39;\0&#39;</span>;</div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160; <span class="keywordflow">return</span> i;</div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;}</div>
<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;</div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;<span class="comment">Busca dentro de una exprecion el operador que tiene mayor precedencia, es decir,</span></div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;<span class="comment">el que se resolvera al final y devuelve su indice dentro de la exprecion.</span></div>
<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00100"></a><span class="lineno"><a class="code" href="_propbool_8c.html#abea34badcc142c06e8d5b4f8c5ac5862">  100</a></span>&#160;<span class="keywordtype">int</span> <a class="code" href="_propbool_8c.html#abea34badcc142c06e8d5b4f8c5ac5862">max_precedencia</a>(<span class="keywordtype">char</span> *prop, <span class="keywordtype">int</span> ini, <span class="keywordtype">int</span> fin) {</div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160; <span class="keywordtype">int</span> npar=0, prec=0, anid=0, index=0;</div>
<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160; <span class="keywordtype">bool</span> prim=<span class="keyword">true</span>;</div>
<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160; <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i=ini; i&lt;fin; i++) {</div>
<div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;  <span class="keywordflow">if</span>(prop[i] == <span class="charliteral">&#39;(&#39;</span>) {</div>
<div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;   npar++;</div>
<div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;  }</div>
<div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;  <span class="keywordflow">else</span> <span class="keywordflow">if</span>(prop[i] == <span class="charliteral">&#39;)&#39;</span>) {</div>
<div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;   npar--;</div>
<div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;  }</div>
<div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;  <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;   <span class="keywordflow">if</span>(npar&lt;0) <span class="keywordflow">return</span> -1; <span class="comment">//error de sintaxis</span></div>
<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;   <span class="keywordtype">int</span> p = <a class="code" href="_propbool_8c.html#ad0acd78bee8a5b768d35240be8cfb722">precedencia</a>(prop[i]);</div>
<div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;   <span class="keywordflow">if</span>(prim) {</div>
<div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;    anid = npar;</div>
<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;    prec = p;</div>
<div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;    index = i;</div>
<div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;    prim = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;    <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;   }</div>
<div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;   <span class="keywordflow">if</span>(npar&lt;anid) {</div>
<div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;    anid = npar;</div>
<div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;    prec = p;</div>
<div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;    index = i;</div>
<div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;   }</div>
<div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;   <span class="keywordflow">else</span> <span class="keywordflow">if</span>(anid==npar) {</div>
<div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;    <span class="keywordflow">if</span>(p&gt;prec) {</div>
<div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;     prec = p;</div>
<div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;     index = i;</div>
<div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;    }</div>
<div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;    <span class="keywordflow">else</span> <span class="keywordflow">if</span>(p==prec) {</div>
<div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;     <span class="keywordflow">if</span>(prop[index] != prop[i])</div>
<div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;      <span class="keywordflow">return</span> -1; <span class="comment">//error de doble interpretacion</span></div>
<div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;     <span class="keywordflow">if</span>(prop[index] != <span class="charliteral">&#39;!&#39;</span>)</div>
<div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;      index = i;</div>
<div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;    }</div>
<div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;   }</div>
<div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;  }</div>
<div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160; }</div>
<div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160; <span class="keywordflow">if</span>(npar != 0 || prim) <span class="keywordflow">return</span> -1; <span class="comment">//error de sintaxis</span></div>
<div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160; <span class="keywordflow">return</span> index;</div>
<div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;}</div>
<div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;</div>
<div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;<span class="comment">Esta funcion recibe un caracter por parametro y devuelve un entero de 0 a 4 que</span></div>
<div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;<span class="comment">representa la precedencia del operador. Los operadores con menor precedencia</span></div>
<div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;<span class="comment">se resuelven primero y los que tienen mayor precedencia se resuelven al final.</span></div>
<div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00148"></a><span class="lineno"><a class="code" href="_propbool_8c.html#ad0acd78bee8a5b768d35240be8cfb722">  148</a></span>&#160;<span class="keywordtype">int</span> <a class="code" href="_propbool_8c.html#ad0acd78bee8a5b768d35240be8cfb722">precedencia</a>(<span class="keywordtype">char</span> c) {</div>
<div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160; <span class="keywordflow">switch</span>(c) {</div>
<div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;  <span class="keywordflow">case</span> <span class="charliteral">&#39;!&#39;</span>: <span class="keywordflow">return</span> 1; <span class="comment">//negacion</span></div>
<div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;  <span class="keywordflow">case</span> <span class="charliteral">&#39;&amp;&#39;</span>: <span class="keywordflow">return</span> 2; <span class="comment">//conjuncion</span></div>
<div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;  <span class="keywordflow">case</span> <span class="charliteral">&#39;|&#39;</span>: <span class="keywordflow">return</span> 2; <span class="comment">//disyuncion</span></div>
<div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;  <span class="keywordflow">case</span> <span class="charliteral">&#39;:&#39;</span>: <span class="keywordflow">return</span> 3; <span class="comment">//implicacion</span></div>
<div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;  <span class="keywordflow">case</span> <span class="charliteral">&#39;=&#39;</span>: <span class="keywordflow">return</span> 4; <span class="comment">//bicondicional</span></div>
<div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160; }</div>
<div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160; <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;}</div>
<div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;</div>
<div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;<span class="comment">Esta funcion se encarga de validar la sintaxis de una exprecion de forma recursiva</span></div>
<div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;<span class="comment">usando la siguiente definicion:</span></div>
<div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;<span class="comment"> P ::= p / (!P) / (P&amp;Q) / (P|Q) / (P:Q) / (P=Q)</span></div>
<div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;<span class="comment">Devuelve verdadero si la proposicion cumple la definicion y falso si no.</span></div>
<div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00167"></a><span class="lineno"><a class="code" href="_propbool_8c.html#a4ac22ed0fc9ab98c2770201ac034397c">  167</a></span>&#160;<span class="keywordtype">bool</span> <a class="code" href="_propbool_8c.html#a4ac22ed0fc9ab98c2770201ac034397c">validar_sintaxis</a>(<span class="keywordtype">char</span> *prop, <span class="keywordtype">int</span> ini, <span class="keywordtype">int</span> fin) {</div>
<div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160; <span class="keywordtype">int</span> index = <a class="code" href="_propbool_8c.html#abea34badcc142c06e8d5b4f8c5ac5862">max_precedencia</a>(prop, ini, fin);</div>
<div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160; <span class="keywordflow">if</span>(index == -1) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160; <span class="keywordflow">if</span>(prop[index] == <span class="charliteral">&#39;!&#39;</span>) {</div>
<div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;  <span class="keywordtype">int</span> npar=0, i=index+1, f;</div>
<div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;  <span class="keywordflow">for</span>(f=i; f&lt;fin; f++) {</div>
<div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;   <span class="keywordflow">if</span>(prop[f]==<span class="charliteral">&#39;(&#39;</span>) {</div>
<div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;    npar++;</div>
<div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;   }</div>
<div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;   <span class="keywordflow">else</span> <span class="keywordflow">if</span>(prop[f]==<span class="charliteral">&#39;)&#39;</span>) {</div>
<div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;    npar--;</div>
<div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;    <span class="keywordflow">if</span>(npar&lt;0) <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;   }</div>
<div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;  }</div>
<div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;  <span class="keywordflow">return</span> <a class="code" href="_propbool_8c.html#a4ac22ed0fc9ab98c2770201ac034397c">validar_sintaxis</a>(prop, i, f);</div>
<div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160; }</div>
<div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160; <span class="keywordflow">else</span> <span class="keywordflow">if</span>(prop[index]==<span class="charliteral">&#39;&amp;&#39;</span> || prop[index]==<span class="charliteral">&#39;|&#39;</span> || prop[index]==<span class="charliteral">&#39;:&#39;</span> || prop[index]==<span class="charliteral">&#39;=&#39;</span>) {</div>
<div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;  <span class="keywordtype">int</span> npar=0, i, f=index;</div>
<div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;  <span class="keywordtype">bool</span> p, q;</div>
<div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;  <span class="keywordflow">for</span>(i=f-1; i&gt;=ini; i--) {</div>
<div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;   <span class="keywordflow">if</span>(prop[i]==<span class="charliteral">&#39;)&#39;</span>) {</div>
<div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;    npar++;</div>
<div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;   }</div>
<div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;   <span class="keywordflow">else</span> <span class="keywordflow">if</span>(prop[i]==<span class="charliteral">&#39;(&#39;</span>) {</div>
<div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;    npar--;</div>
<div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;    <span class="keywordflow">if</span>(npar&lt;0) <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;   }</div>
<div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;  }</div>
<div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;  p = <a class="code" href="_propbool_8c.html#a4ac22ed0fc9ab98c2770201ac034397c">validar_sintaxis</a>(prop, i+1, f);</div>
<div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;  npar=0; i=index+1;</div>
<div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;  <span class="keywordflow">for</span>(f=i; f&lt;fin; f++) {</div>
<div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;   <span class="keywordflow">if</span>(prop[f]==<span class="charliteral">&#39;(&#39;</span>) {</div>
<div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;    npar++;</div>
<div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;   }</div>
<div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;   <span class="keywordflow">else</span> <span class="keywordflow">if</span>(prop[f]==<span class="charliteral">&#39;)&#39;</span>) {</div>
<div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;    npar--;</div>
<div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;    <span class="keywordflow">if</span>(npar&lt;0) <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;   }</div>
<div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;  }</div>
<div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;  q = <a class="code" href="_propbool_8c.html#a4ac22ed0fc9ab98c2770201ac034397c">validar_sintaxis</a>(prop, i, f);</div>
<div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;  <span class="keywordflow">return</span> (p &amp;&amp; q);</div>
<div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160; }</div>
<div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160; <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;  <span class="keywordtype">int</span> vars=0;</div>
<div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;  <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i=ini; i&lt;fin; i++)</div>
<div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;   <span class="keywordflow">if</span>(prop[i]!=<span class="charliteral">&#39;(&#39;</span> &amp;&amp; prop[i]!=<span class="charliteral">&#39;)&#39;</span>)</div>
<div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;    vars++;</div>
<div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;  <span class="keywordflow">if</span>(vars == 1)</div>
<div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;   <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160; }</div>
<div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;}</div>
<div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;</div>
<div class="line"><a name="l00220"></a><span class="lineno"><a class="code" href="_propbool_8c.html#a11e5ac67d990d85f2e7c3229badd69a3">  220</a></span>&#160;<span class="keywordtype">bool</span> <a class="code" href="_propbool_8c.html#a11e5ac67d990d85f2e7c3229badd69a3">evaluar_proposicion</a>(<span class="keywordtype">char</span> *prop, <span class="keywordtype">bool</span> *vals, <span class="keywordtype">char</span> *vars, <span class="keywordtype">char</span> *resp, <span class="keywordtype">int</span> ini, <span class="keywordtype">int</span> fin) {</div>
<div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160; <span class="keywordtype">int</span> index = <a class="code" href="_propbool_8c.html#abea34badcc142c06e8d5b4f8c5ac5862">max_precedencia</a>(prop, ini, fin);</div>
<div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160; <span class="keywordflow">if</span>(prop[index] == <span class="charliteral">&#39;!&#39;</span>) {</div>
<div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;  <span class="keywordtype">int</span> npar=0, i=index+1, f;</div>
<div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;  <span class="keywordtype">bool</span> b;</div>
<div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;  <span class="keywordflow">for</span>(f=i; f&lt;fin; f++) {</div>
<div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160;   <span class="keywordflow">if</span>(prop[f]==<span class="charliteral">&#39;(&#39;</span>) {</div>
<div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;    npar++;</div>
<div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;   }</div>
<div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;   <span class="keywordflow">else</span> <span class="keywordflow">if</span>(prop[f]==<span class="charliteral">&#39;)&#39;</span>) {</div>
<div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;    npar--;</div>
<div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;    <span class="keywordflow">if</span>(npar&lt;0) <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;   }</div>
<div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;  }</div>
<div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;  b = !<a class="code" href="_propbool_8c.html#a11e5ac67d990d85f2e7c3229badd69a3">evaluar_proposicion</a>(prop, vals, vars, resp, i, f);</div>
<div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;  <span class="keywordflow">if</span>(b) resp[index] = <span class="charliteral">&#39;V&#39;</span>; <span class="keywordflow">else</span> resp[index] = <span class="charliteral">&#39;F&#39;</span>;</div>
<div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;  <span class="keywordflow">return</span> b;</div>
<div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160; }</div>
<div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160; <span class="keywordflow">else</span> <span class="keywordflow">if</span>(prop[index]==<span class="charliteral">&#39;&amp;&#39;</span> || prop[index]==<span class="charliteral">&#39;|&#39;</span> || prop[index]==<span class="charliteral">&#39;:&#39;</span> || prop[index]==<span class="charliteral">&#39;=&#39;</span>) {</div>
<div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;  <span class="keywordtype">int</span> npar=0, i, f=index;</div>
<div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;  <span class="keywordtype">bool</span> p, q, r;</div>
<div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160;  <span class="keywordflow">for</span>(i=f-1; i&gt;=ini; i--) {</div>
<div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;   <span class="keywordflow">if</span>(prop[i]==<span class="charliteral">&#39;)&#39;</span>) {</div>
<div class="line"><a name="l00243"></a><span class="lineno">  243</span>&#160;    npar++;</div>
<div class="line"><a name="l00244"></a><span class="lineno">  244</span>&#160;   }</div>
<div class="line"><a name="l00245"></a><span class="lineno">  245</span>&#160;   <span class="keywordflow">else</span> <span class="keywordflow">if</span>(prop[i]==<span class="charliteral">&#39;(&#39;</span>) {</div>
<div class="line"><a name="l00246"></a><span class="lineno">  246</span>&#160;    npar--;</div>
<div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160;    <span class="keywordflow">if</span>(npar&lt;0) <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00248"></a><span class="lineno">  248</span>&#160;   }</div>
<div class="line"><a name="l00249"></a><span class="lineno">  249</span>&#160;  }</div>
<div class="line"><a name="l00250"></a><span class="lineno">  250</span>&#160;  p = <a class="code" href="_propbool_8c.html#a11e5ac67d990d85f2e7c3229badd69a3">evaluar_proposicion</a>(prop, vals, vars, resp, i+1, f);</div>
<div class="line"><a name="l00251"></a><span class="lineno">  251</span>&#160;  npar=0; i=index+1;</div>
<div class="line"><a name="l00252"></a><span class="lineno">  252</span>&#160;  <span class="keywordflow">for</span>(f=i; f&lt;fin; f++) {</div>
<div class="line"><a name="l00253"></a><span class="lineno">  253</span>&#160;   <span class="keywordflow">if</span>(prop[f]==<span class="charliteral">&#39;(&#39;</span>) {</div>
<div class="line"><a name="l00254"></a><span class="lineno">  254</span>&#160;    npar++;</div>
<div class="line"><a name="l00255"></a><span class="lineno">  255</span>&#160;   }</div>
<div class="line"><a name="l00256"></a><span class="lineno">  256</span>&#160;   <span class="keywordflow">else</span> <span class="keywordflow">if</span>(prop[f]==<span class="charliteral">&#39;)&#39;</span>) {</div>
<div class="line"><a name="l00257"></a><span class="lineno">  257</span>&#160;    npar--;</div>
<div class="line"><a name="l00258"></a><span class="lineno">  258</span>&#160;    <span class="keywordflow">if</span>(npar&lt;0) <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00259"></a><span class="lineno">  259</span>&#160;   }</div>
<div class="line"><a name="l00260"></a><span class="lineno">  260</span>&#160;  }</div>
<div class="line"><a name="l00261"></a><span class="lineno">  261</span>&#160;  q = <a class="code" href="_propbool_8c.html#a11e5ac67d990d85f2e7c3229badd69a3">evaluar_proposicion</a>(prop, vals, vars, resp, i, f);</div>
<div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160;  <span class="keywordflow">switch</span>(prop[index]) {</div>
<div class="line"><a name="l00263"></a><span class="lineno">  263</span>&#160;   <span class="keywordflow">case</span> <span class="charliteral">&#39;&amp;&#39;</span>: r = p&amp;&amp;q; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160;   <span class="keywordflow">case</span> <span class="charliteral">&#39;|&#39;</span>: r = p||q; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00265"></a><span class="lineno">  265</span>&#160;   <span class="keywordflow">case</span> <span class="charliteral">&#39;:&#39;</span>: r = !p||q; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160;   <span class="keywordflow">case</span> <span class="charliteral">&#39;=&#39;</span>: r = (!p||q)&amp;&amp;(!q||p); <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160;  }</div>
<div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160;  <span class="keywordflow">if</span>(r) resp[index] = <span class="charliteral">&#39;V&#39;</span>; <span class="keywordflow">else</span> resp[index] = <span class="charliteral">&#39;F&#39;</span>;</div>
<div class="line"><a name="l00269"></a><span class="lineno">  269</span>&#160;  <span class="keywordflow">return</span> r;</div>
<div class="line"><a name="l00270"></a><span class="lineno">  270</span>&#160; }</div>
<div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160; <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160;  <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i=0; vars[i]!=<span class="charliteral">&#39;\0&#39;</span>; i++)</div>
<div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;   <span class="keywordflow">if</span>(prop[index] == vars[i]){</div>
<div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160;    <span class="keywordflow">if</span>(vals[i])</div>
<div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160;     resp[index] = <span class="charliteral">&#39;V&#39;</span>;</div>
<div class="line"><a name="l00276"></a><span class="lineno">  276</span>&#160;    <span class="keywordflow">else</span></div>
<div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160;     resp[index] = <span class="charliteral">&#39;F&#39;</span>;</div>
<div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;    <span class="keywordflow">return</span> vals[i];</div>
<div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160;   }</div>
<div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160; }</div>
<div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160;}</div>
<div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160;</div>
<div class="line"><a name="l00283"></a><span class="lineno"><a class="code" href="_propbool_8c.html#af52a35e15a3ce80a7521c75d5e78f396">  283</a></span>&#160;<span class="keywordtype">int</span> <a class="code" href="_propbool_8c.html#af52a35e15a3ce80a7521c75d5e78f396">buscar_variables</a>(<span class="keywordtype">char</span> *prop, <span class="keywordtype">char</span> *vars){</div>
<div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#160; <span class="keywordtype">int</span> nvars = 0;</div>
<div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160; <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i=0; prop[i]!=<span class="charliteral">&#39;\0&#39;</span>; i++) {</div>
<div class="line"><a name="l00286"></a><span class="lineno">  286</span>&#160;  <span class="keywordflow">if</span>(prop[i]!=<span class="charliteral">&#39;(&#39;</span> &amp;&amp; prop[i]!=<span class="charliteral">&#39;)&#39;</span> &amp;&amp; prop[i]!=<span class="charliteral">&#39;!&#39;</span> &amp;&amp; prop[i]!=<span class="charliteral">&#39;&amp;&#39;</span> &amp;&amp; prop[i]!=<span class="charliteral">&#39;|&#39;</span> &amp;&amp; prop[i]!=<span class="charliteral">&#39;:&#39;</span> &amp;&amp; prop[i]!=<span class="charliteral">&#39;=&#39;</span>) {</div>
<div class="line"><a name="l00287"></a><span class="lineno">  287</span>&#160;   <span class="keywordtype">bool</span> existe = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00288"></a><span class="lineno">  288</span>&#160;   <span class="keywordflow">for</span>(<span class="keywordtype">int</span> j=0; j&lt;nvars &amp;&amp; !existe; j++) {</div>
<div class="line"><a name="l00289"></a><span class="lineno">  289</span>&#160;    <span class="keywordflow">if</span>(prop[i] == vars[j]) {</div>
<div class="line"><a name="l00290"></a><span class="lineno">  290</span>&#160;     existe = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00291"></a><span class="lineno">  291</span>&#160;    }</div>
<div class="line"><a name="l00292"></a><span class="lineno">  292</span>&#160;   }</div>
<div class="line"><a name="l00293"></a><span class="lineno">  293</span>&#160;   <span class="keywordflow">if</span>(!existe) {</div>
<div class="line"><a name="l00294"></a><span class="lineno">  294</span>&#160;    vars[nvars++] = prop[i];</div>
<div class="line"><a name="l00295"></a><span class="lineno">  295</span>&#160;   }</div>
<div class="line"><a name="l00296"></a><span class="lineno">  296</span>&#160;  }</div>
<div class="line"><a name="l00297"></a><span class="lineno">  297</span>&#160; }</div>
<div class="line"><a name="l00298"></a><span class="lineno">  298</span>&#160; <span class="keywordflow">return</span> nvars;</div>
<div class="line"><a name="l00299"></a><span class="lineno">  299</span>&#160;}</div>
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